Be Quiet! Dark Base 900 Gaming Case E-ATX No PSU Tool-less 3 x Silent Wings 3 Fans Modular Construction Black   Outstanding Flexibility and Silence     be quiet! Dark Base 900: unrivaled flexibility with impeccable cooling and silence features. It was designed for high-end enthusiasts and individualists – all of those who expect the highest standards when it comes to modularity, compatibility and design for their high-end workstations as well as overclocked and silent water-cooled systems.      Dark Base 900 has numerous modularity options to satisfy every desire with lots of features to support special configurations. Aluminum surfaces and steel offer highest stability with a look of extreme elegance. Simply an engineering work of art     Fully versatile thanks to modular construction, offering an relocatable motherboard tray, repositionable HDD slots, support for even E-ATX and XL-ATX as well as the possibility of an inverse layout     Three pre-installed SilentWings® 3 140mm PWM fans featuring a smooth-running 6-pole motor, fluid-dynamic bearing and funnel-shaped air inlets     Effective full circuit airflow system with innovative noise-reducing vents all around the case     Completely sound insulated case with decoupled elements for motherboard, power supply and drives     Four areas for water cooling radiators up to 420mm on top, front, back and base of the case     2-in-1 side panel vent can be closed for silent operation or opened for two additional fans     Product conception, design and quality control in Germany Applications:     • High-end workstations and desktop PCs     • High-resolution gaming and multimedia systems     • Extremely overclocked systems     • Super silent water-cooled PCs Unrivaled Flexibility     • Motherboard tray with enhanced possibilities to suit individual space requirements        - Completely relocatable and usable as a test bench        - Adjustable to three different heights        - Installation alongside the left panel for an inverted layout     • Repositionable HDD tray for individual space requirements inside the case     • E-ATX and XL-ATX support permits installation of practically any motherboard     • Installation options of up to 7 decoupled HDDs, 15 SSDs and 2 optical drives Impeccable Cooling and Silence      • Three virtually inaudible SilentWings® 3 140mm PWM fans offer unrivaled and uncompromising performance with a broad range of amazing features:        - 6-pole fan motor for very low power consumption and less vibration        - Fluid-dynamic bearing with copper core enables a super long life span        - Unique airflow-optimized fan blade design        - Fan frame with funnel-shaped air inlets produces high air pressure        - High quality IC motor controller reduces electrical noise     • Intelligent full circuit airflow system with noise-dampened vents all around the case     • Manual stepless fan controller supports up to three PWM and three 3-pin fans     • Installation of up to six additional 140mm fans or up to nine additional 120mm fans possible     • Ready for water cooling radiators up to 420mm with four mounting slots:        - Front: 420mm – Top: 420mm – Back: 140mm – Base: 280mm     • Built-in insulation in front, top cover and side panels     • Decoupled motherboard tray, power supply tray and drive slots for reduced vibration and noise     • 2-in-1 side panel vent can be closed for silent operation or opened with the possibility to mount two additional 120mm fans Advanced Assembly and Handling     • Generous space thanks to repositionable single HDD slots     • Impressive features permit individual configurations and setups     • Customizable cable management thanks to carefully placed pass-throughs     • Two cleanable dust filters that can be conveniently removed from the front High-quality Materials and Elegant Design     • Premium aluminum surfaces     • Steel parts from 0.8mm to 1.0mm for highest stability     • Compatibility with all be quiet! products and all available graphics cards Specification Form Factor: E-ATX Small Form Factor: No Power Supply Wattage: No PSU Motherboard Support: \"XL-ATX, E-ATX, ATX, Micro ATX\" Connectors / Controls: 2 x USB 3.0 2 x USB 2.0 HD Audio (mic & headphone jacks) 5.25 Bay: Yes (5.25 Bay) Drive Bays: 2 x 5.25\"\" (removable) 7 x 3.5\"\" (individually removable) 1 x 2.5\"\" on motherboard tray 14 x 2.5\"\" inside HDD slots (removable) Expansion Slots: 8 x Expansion Slots Cooling System: \"Included 2 x front 140mm Pure Wing 2 Fans 1 x rear 140mm Pure Wing 2 Fan Optional Top: 3x 140 / 4x 120 / 1x 180 Front: 1x 140, 120 (w/o ODD cage) Bottom: 2x 140, 120 Side panel: 2x 120\" \"Liquid coolin Top: 120, 140, 180*, 240, 280, 360, 420 Front: 120, 140, 240, 280, 360, 420 Rear: 120, 140 Bottom: 120, 140, 280\" Colour: Black Material: \"0.8 - 1mm steel ABS plastic, 0.8mm aluminium\" Compatability: VGA card: 325mm w/o HDD slots: 470 mm Max CPU cooler length: up to 185 mm PSU: without bottom fan: 150 - 184 mm Weight/Dimensions: 14.2 kg (L x W x H) 577 x 243 x 585 mm Package Weight: 17.6000 kg Warranty: 3 Years